Home / 78,200.64-117,276.19-28,274.13

Finding the Fourth Proportional to 78,200.64, 117,276.19 and 28,274.13

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Solution

The fourth proportional to 78,200.64, 117,276.19 and 28,274.13 is: 42,402.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,200.64 : 117,276.19 = 28,274.13 : x
  2. Step 2: Convert to fraction form
    78,200.64/117,276.19 = 28,274.13/x
  3. Step 3: Cross multiply
    78,200.64x = 117,276.19 × 28,274.13
  4. Step 4: Simplify right side
    78,200.64x = 3,315,882,171.28
  5. Step 5: Solve for x
    x = 3,315,882,171.28/78,200.64
  6. Step 6: Final answer
    x = 42,402.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.